Sunlight
- The main source of light on th earth is the sun.
- Sunlight provides the energy that green plants use to create sugars mostly in the form of starches, which release energy into the living things that digest them.
- This process of photosynthesis provides virtually all the energy used by living things.
빛의 의미
- 일상적인 의미에서의 빛 = 가시광선
- 물리적인 의미에서의 빛 = 전자기파